L-Tryptophan 1000 mg®
Other CombinationsBrand: Source Naturals
Functions
Net Contents
90 Tablet(s)
Serving Size
1 Tablet(s)
Servings Per Container
45
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
0 21078 02610 5
Product Version
SN2610 REV C191-B FG-99481
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
2 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
1 ingredients report a %DV; 1 meet or exceed 100% DV.
Label states: Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Contains
- Milk
- Egg
- Wheat
- Soy
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1 Tablet(s) · 1–2 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Vitamin B6(Pyridoxine Hydrochloride) | 44 mg | 2200% |
| L-Tryptophan | 2 Gram(s) | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Suggested Use: 1 tablet 1 to 2 times daily, between meals and preferably with fruit juice. To support restful sleep, take 2 tablets before bed.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Caution: If you are pregnant, may become pregnant, breastfeeding, or are taking medications such as SSRIs or MAOIs consult your health care professional before using this product.
Precautions re: All Other
Do not use if either tamper-evident seal is broken or missing.
Precautions re: Children
Keep out of the reach of children.
Precautions re: All Other
This product may cause drowsiness.
Storage
Storage
Store in a cool, dry place.
Formulation
Formula re: Contains
L-Tryptophan with Vitamin B-6
Formulation re: Other
Mood, relaxation, sleep
Formula re: Contains
The essential amino acid L-tryptophan is the precursor for the synthesis of melatonin and serotonin, a hormone and a neurotransmitter involved with mood and stress response. It helps support relaxation, restful sleep, and a positive outlook. This tryptophan tablet includes vitamin B-6, which is required to convert tryptophan to serotonin. If needed, L-tryptophan is converted to niacin in the body, an important B vitamin. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.
Formulation re: Does NOT Contain
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no preservatives, or artificial color, flavor or fragrance.
FDA Statements
FDA Statement of Identity
Dietary Supplement
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Other Label Statements
Brand IP Statement(s) re: (c), (TM), (SM)
Copyright SOURCE NATURALS, INC.
Manufacturer & Distributor
Distributor
Source Naturals, Inc.
P. O. Box 2118, Santa Cruz, CA, 95062
Market Reference
Source Naturals L- Tryptophan with Coenzyme B-6
Herbs Direct4.8(72)$14.68
Best Naturals L-Tryptophan mg 60
Target4.7(74)$9.99Lowest
NOW Foods L- Tryptophan Double Strength 1000 mg 60 Tablets
Walmart4.6(1400)$19.38
Vitamatic L- Tryptophan 1000mg 120 Tablets
Target4.7(331)$14.99
L-Tryptophan Source Naturals
PureFormulas.com4.6(1100)$13.99
Pure Naturals L- Tryptophan 1000mg Tablets
Walmart - Vitaminshub4.4(5)$9.99Lowest
Amazing Formulas L- Tryptophan 1000mg Tablets
Target4.7(315)$17.99
Now Foods L-tryptophan 1000mg Tablets (60-Count)
Walmart - Fruitful Yield4.6(1400)$43.58
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
GNC
4.1 (63)Vitamin & supplements store
1698 S Congress Ave, Palm Springs, FL 33461
Country Corner Health Foods
4.8 (61)Health food store
3130 S Congress Ave, Palm Springs, FL 33461
Sharp Elite Nutrition
5.0 (20)Vitamin & supplements store
5708 Azalea Cir, West Palm Beach, FL 33415
Be Healthy Herbal Supplements
5.0 (1)Vitamin & supplements store
3557 Forest Hill Blvd, West Palm Beach, FL 33406
HealthXtra
4.0 (1)Vitamin & supplements store
3677 23rd Ave S STE B107, Lake Worth Beach, FL 33461
Well Being Nutrition
5.0 (4)Sports nutrition store
3093 Lake Worth Rd, Palm Springs, FL 33461
The Vitamin Shoppe
4.7 (85)Vitamin & supplements store
10590 Forest Hill Blvd #200, Wellington, FL 33414
Productos naturales West Palm Beach Vital Natural
3.0 (2)Vitamin & supplements store
1941 S Military Trl # 15G, West Palm Beach, FL 33415
Research & Studies
L-Tryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications
DM Richard, MA Dawes, CW Mathias… - International …, 2009 - journals.sagepub.com
… healthy nutrition. While typical intake for many individuals is approximately 900 to 1000 mg daily… mg/day 5,12,13 and 425 mg/day, 4,14,15 which translates to a dietary intake of 3.5 to 6.0 …
2009967 citationsOral tryptophan activates duodenal aryl hydrocarbon receptor in healthy subjects: a crossover randomized controlled trial
GH Rueda, N Causada-Calo… - American Journal …, 2024 - journals.physiology.org
… and washout periods, with an estimated amount of 1,000 mg l-tryptophan intake per day. … l-tryptophan supplementation, which is not surprising as this study was performed in healthy …
202428 citationsRole of tryptophan in health and disease: Systematic review of the anti-oxidant, anti-inflammation, and nutritional aspects of tryptophan and its metabolites
RB Singh - World Heart Journal, 2019 - search.proquest.com
… L-Tryptophan is an essential amino acid that is needed for the synthesis of proteins and … ranges are: L-tryptophan (50 -1,000 mg), serotonin/5HTP (50-100 mg), and melatonin (1-10 mg). …
201958 citationsThe Clinical Spectrum of the Eosinophilia-Myalgia Syndrome Associated with L-Tryptophan Ingestion: Clinical Features in 20 Patients and Aspects of …
RW Martin, J Duffy, AG Engel, JT Lie… - Annals of internal …, 1990 - acpjournals.org
… a 38-year-old woman was started on 1000 mg of L-tryptophan nightly to help her sleep. In late … 500 to 2500 mg/d. Sources promoting L-tryptophan use included health-oriented books (9 …
1990212 citationsRegulatory toxicity and safety profiling of N-acetyl-L-tryptophan with special emphasis on genotoxicity and male reproductive toxicity via intramuscular route of …
R Kumar, N Gaurav, V Kumar… - Drug and Chemical …, 2026 - Taylor & Francis
2026… coupled to mass spectrometry in quality assessment of dietary supplements—A case study of tryptophan supplements: release assay, targeted and …
KA Stępień, J Giebułtowicz - Pharmaceuticals, 2022 - mdpi.com
… Trp has a positive effect on mood, cognitive functions [30], sleep [31], and a decrease or maintenance of a healthy weight [32]. Response to supplementation is individual and may be …
20229 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-11-22. DSLD Label ID: 274811. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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